+0  
 
0
483
1
avatar

4 - 8 sin^2 x

 

answer: 4cos2x

how?

Guest May 17, 2017
 #1
avatar+90056 
+2

 

4 - 8 sin^2 (x)        factor

 

4  [ 1  - 2 sin^2 (x)   ]      remember that  1 - 2sin^2x  =  cos (2x)

 

So  we end up with

 

4  cos (2x)

 

 

 

cool cool cool

CPhill  May 17, 2017
edited by CPhill  May 17, 2017

31 Online Users

avatar

New Privacy Policy

We use cookies to personalise content and advertisements and to analyse access to our website. Furthermore, our partners for online advertising receive information about your use of our website.
For more information: our cookie policy and privacy policy.